package com.model.basemodel.http;

import android.util.Log;

import com.model.basemodel.http.apiconfig.HttpConfig;

import java.io.IOException;
import java.util.List;

import okhttp3.HttpUrl;
import okhttp3.Interceptor;
import okhttp3.Request;
import okhttp3.Response;

/**
 * @ClassName BaseUrlInterceptor
 * @Description TODO
 * @Author ：WangZhuang
 * @Date : 2021/9/14 14:45
 * @Version :1.0
 */
public class BaseUrlInterceptor implements Interceptor {

    @Override
    public Response intercept(Chain chain) throws IOException {

        //获取request
        Request request = chain.request();
        //从request中获取原有的HttpUrl实例oldHttpUrl
        HttpUrl oldHttpUrl = request.url();
        Log.i("oldUrl", "intercept: " + oldHttpUrl);
        //获取request的创建者builder
        Request.Builder builder = request.newBuilder();
        //从request中获取headers，通过给定的键url_name
        List<String> headerValues = request.headers("urlname");
        if (headerValues != null && headerValues.size() > 0) {
            //如果有这个header，先将配置的header删除，因此header仅用作app和okhttp之间使用
            builder.removeHeader("urlname");
            //匹配获得新的BaseUrl
            String headerValue = headerValues.get(0);
            HttpUrl newBaseUrl = null;

            if ("test1".equals(headerValue)) {
                newBaseUrl = HttpUrl.parse(HttpConfig.INSTANCE.getTEST_SERVER());
            } else if ("test2".equals(headerValue)) {
                newBaseUrl = HttpUrl.parse(HttpConfig.INSTANCE.getONLINE_SERVER());
            } else {
                newBaseUrl = oldHttpUrl;
            }
            //重建新的HttpUrl，修改需要修改的url部分
            HttpUrl newFullUrl = oldHttpUrl
                    .newBuilder()
                    .scheme("http")//更换网络协议
                    .host(newBaseUrl.host())//更换主机名
                    .port(newBaseUrl.port())//更换端口
                    .removePathSegment(0)//移除第一个参数
                    .build();
            //重建这个request，通过builder.url(newFullUrl).build()；
            // 然后返回一个response至此结束修改
            Log.i("newUrl", "intercept: " + newFullUrl.toString());
            return chain.proceed(builder.url(newFullUrl).build());

        }

        return chain.proceed(request);

    }

}
